ALS Flashcards
Working rate on ECG
300/large squares in R-R
6x no QRS
Normal QRS
<0.12 s = 3 small squares
Broad = abnormal depolarisation
Normal PR interval
3-5 small squares
0.12 - 0.2 s
1st degree block
Prolonged fixed PR
Mobitz 1
Prog. longer PR until QRS drop
Mobitz 2
2 or 3 P for every QRS
3rd degree block
random, no pattern
Lateral leads
1, avl, V5 V6
Inferior leads
ii, iii, avf
anterior leads
V1 - 4
Mx STEMI
PCI in 120 mins onset
Aspirin and prasugrel (clopi if on OAC)
Med mx = asp, tic, LMWH
secondary STEMI prevention
DAPT
ACEi
BB
statin
GTN
TWI is normal in
aVR
often V1
Non shockable rhythms
PEA asystole
Mx non shockable
- Adrenaline ASAP = 1mg of 1:10,000
Shockable rhythms
VT and VF
Mx shockable
- Shock
- Adrenaline after 3rd shock
- Amiodarone 300mg after 3rd shock
4 adverse features in arrhythmia
Shock
Syncope
HF
MI
Tachy and life threatening features?
Synchronised shock
300mg amiodarone
Tachy, narrow QRS, regular
- Vagal
- Adenosine 6,12,18
Tachy, braod, irreg
Poly VT = 2mg Mg
Tachy, narrow, irregular
- BB
- Dig
- Anti coag
tachy, broad, reg
VT = amdiodarone 300mg
Brady and life threatining feature
- atropine 500mcg max 3mg
- transvenous pacing